MSK Flashcards Preview

ESA 2 > MSK > Flashcards

Flashcards in MSK Deck (180)
Loading flashcards...
0

What is the action of pec major?

Adduction and medial rotation of humerus. Draws scapula anteriorly and inferiorly.

Clavicular head flexes humerus and Sterno-costal head extends it from the flexed position

1

What is the innervation of pec major?

The lateral and medial pectoral nerves.

Clavicle head - C5,6

Sterno-costal head - C7,8 T1

2

Innervation of pec minor?

Medial pectoral nerve C8 T1

3

Action of pec minor

Draws scapula anteriorly and inferiorly against thoracic wall and stabilises it.

4

Innervation of subclavius?

Nerve to subclavius C5,6

5

Action of subclavius?

Anchors and depresses clavicle.

6

Innervation of serratus anterior?

Long thoracic nerve C5,6,7

7

Action of serratus anterior?

Protract (abduct) scapula and hold it again the thoracic wall. Rotate scapula medially.

8

What are the function of the clavicle?

Connects limb to trunk whilst allowing a range of movements of limb.
Shock absorber from limb/shoulder.
Protects neuromascular bundle supplying upper limb.

9

What is the proximal joint of the clavicle?

Manubrium of sternum with the sternal facet at sternoclavicular joint (SC)

10

What is the difference between the superior and inferior surfaces of the clavicle?

Superior surface is smooth - subcutaneous tissues
Inferior surface is rough because strong ligaments bind to it?

11

What attaches to the following places of the clavicle?
Inferiorly, lateral - medial:

Trapezoid line
Conoid tubercule
Subclavian groove
Impression for costoclavicular ligament

Trapezoid line - trapezoid ligament
Conoid tubercule - Conoid ligament
Subclavian groove - subclavius muscle
Impression for costoclavicular ligament

12

Where is the clavicle most likely to break?

Between Middle third and lateral third

13

Where do the scapula and clavicle join?

Acromioclavicular joint

14

Where is the deltoid tubercule?

Spine of scapula.

15

Describe the locations of the coronoid fossa and radial fossa of the humerus

Both distal end, anterior. Coronoid is more medial next to trochlea.
Radial fossa is more lateral and next to the capitulum.

16

What is the condyle of the humerus?

Radial fossa coronoid fossa, capitulum, trochlea

17

What is the purpose of the olecranon fossa of the humerus?

Allows space for the olecranon of ulna.

18

What are the types of bone?

Long
short
Irregular - may have sinuses (pneumatic) and accessories
Sesmoid e.g. Patella
Flat

19

What is a apophysis?

A normal development outgrowth of bone.

20

What is a facet?

A flattened surface for joint/muscle attachment

21

Explain the types of joints fibrous, cartilaginous and synovial

Fibrous: held together by fibrous connective tissue
Cartilaginous: held by hyaline cartilage e.g. Pubic symphysis
Synovial: bones with articular cartilage meet within a joint capsule with synovial lining which contains synovial fluid.

22

Explain the types of joints, diarthrosis, synarthrosis and Amphiarthrosis. (Functional classification)

Diarthrosis: freely movable (always synovial)
Amphiarthrosis - slight mobility (mostly cartilaginous)
Synarthrosis - little of no mobility (mostly fibrous)

23

Briefly explain the types of synovial joints.

Hinge - only flexion and extension
Saddle - concave and concave joint surfaces e.g. 1st MCPJ
Plane - permits some sliding e.g. Acromioclavicular joint
Pivot- rotation, bone into a bony ligamentous socket e.g. Proximal radio-ulnar joint.
Condyloid - flexion, extension Adduction, abduction and circumduction e.g. MCPJ
Ball and socket e.g. Shoulder and hips

24

What comprises the first layer of muscles of the anterior forearm?

Pronator teres - pronates the hand
Flexor Carpi radialis- flexes wrist and abducts
Palmaris longus - flexes wrist
Flexor Carpi ulnaris - flexes wrist and adducts

25

What compromises the second layer of muscles of the anterior forearm?

Flexor digitorum superficialis - flexes middle and proximal joints of four digits.

26

What comprises the third layer of muscles of the anterior forearm?

Flexor digitorum profundus - flexes distal phalanges
Flexor pollicis longus - flexes thumb
Underneath:
Pronator quadratus - pronates hand and holds ulna and radius.

27

What is the innervation of the muscles of the forearm?

All median nerve apart from:
Flexor Carpi ulnaris
Flexor digitorum profundus (medial part)

28

Origin of musculocutaneous?

C5,6,7

29

Innervation by musculocutaneous?

Anterior muscles of the arm. Biceps brachii, coracobrachialis and brachialis.